Denial of Service of an Investigation in Splunk Enterprise Security through Investigation attachments

Vulnerability Description

In Splunk Enterprise Security (ES) versions below 7.1.2, an attacker can use investigation attachments to perform a denial of service (DoS) to the Investigation. The attachment endpoint does not properly limit the size of the request which lets an attacker cause the Investigation to become inaccessible.

References

• https://advisory.splunk.com/advisories/SVD-2024-0101
• https://research.splunk.com/application/bb85b25e-2d6b-4e39-bd27-50db42edcb8f/